Module java.base
Package java.lang

Class AssertionError

java.lang.Object
java.lang.Throwable
java.lang.Error
java.lang.AssertionError
All Implemented Interfaces:
Serializable
public class AssertionError extends Error
Thrown to indicate that an assertion has failed.

The seven one-argument public constructors provided by this class ensure that the assertion error returned by the invocation: 

     new AssertionError(expression)
has as its detail message the string conversion of expression (as defined in section of The Java Language Specification), regardless of the type of expression.
Since:
1.4
See Also:

  • Constructor Summary

    Constructors
    Constructor
    Description
    AssertionError()
    Constructs an AssertionError with no detail message.
    AssertionError(boolean detailMessage)
    Constructs an AssertionError with its detail message derived from the specified boolean, which is converted to a string as defined in section of The Java Language Specification.
    AssertionError(char detailMessage)
    Constructs an AssertionError with its detail message derived from the specified char, which is converted to a string as defined in section of The Java Language Specification.
    AssertionError(double detailMessage)
    Constructs an AssertionError with its detail message derived from the specified double, which is converted to a string as defined in section of The Java Language Specification.
    AssertionError(float detailMessage)
    Constructs an AssertionError with its detail message derived from the specified float, which is converted to a string as defined in section of The Java Language Specification.
    AssertionError(int detailMessage)
    Constructs an AssertionError with its detail message derived from the specified int, which is converted to a string as defined in section of The Java Language Specification.
    AssertionError(long detailMessage)
    Constructs an AssertionError with its detail message derived from the specified long, which is converted to a string as defined in section of The Java Language Specification.
    AssertionError(Object detailMessage)
    Constructs an AssertionError with its detail message derived from the specified object, which is converted to a string as defined in section of The Java Language Specification.
    AssertionError(String message, Throwable cause)
    Constructs a new AssertionError with the specified detail message and cause.

  • Method Summary

    Methods inherited from class java.lang.Throwable

    addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

  • Constructor Details

    • AssertionError

      public AssertionError()
      Constructs an AssertionError with no detail message.

    • AssertionError

      public AssertionError(Object detailMessage)
      Constructs an AssertionError with its detail message derived from the specified object, which is converted to a string as defined in section of The Java Language Specification.

      If the specified object is an instance of Throwable, it becomes the cause of the newly constructed assertion error.

      Parameters:
      detailMessage - value to be used in constructing detail message
      See Also:

    • AssertionError

      public AssertionError(boolean detailMessage)
      Constructs an AssertionError with its detail message derived from the specified boolean, which is converted to a string as defined in section of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public AssertionError(char detailMessage)
      Constructs an AssertionError with its detail message derived from the specified char, which is converted to a string as defined in section of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public AssertionError(int detailMessage)
      Constructs an AssertionError with its detail message derived from the specified int, which is converted to a string as defined in section of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public AssertionError(long detailMessage)
      Constructs an AssertionError with its detail message derived from the specified long, which is converted to a string as defined in section of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public AssertionError(float detailMessage)
      Constructs an AssertionError with its detail message derived from the specified float, which is converted to a string as defined in section of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public AssertionError(double detailMessage)
      Constructs an AssertionError with its detail message derived from the specified double, which is converted to a string as defined in section of The Java Language Specification.
      Parameters:
      detailMessage - value to be used in constructing detail message

    • AssertionError

      public AssertionError(String message, Throwable cause)
      Constructs a new AssertionError with the specified detail message and cause.

      Note that the detail message associated with cause is not automatically incorporated in this error's detail message.

      Parameters:
      message - the detail message, may be null
      cause - the cause, may be null
      Since:
      1.7